Odometer redundancy (ECM capture)

[Terry Martin]

Can anyone confirm if either GM or Ford uses a scheme to capture the
mileage in non-volatile ram. I think the weird dash cluster (ie '95
Caprice) may do it, and make it accessible to the PCM, but haven't
tackled the project yet. I'm specifically interested in Ford's EEC's and
if implemented, which year/models.

Thanks
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